Lamp-changing device.



A. ZElSEL.

LAMP CHANGING DEVICE.

APPLICATION FILED JUNE 19, ms.

Patented Apr. 24,1917

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ADOLPH ZEISEL, 0F BEL AIR, MARYLAND, ASSIGNOR TO ZEISEL ELECTRIC 00., OF BEL AIR, MARYLAND, A CORPORATION OF MARYLAND.

LAMP-CHANGING DEVICE.

Specification of Letters Patent.

Patented Apr. 24, 1917.

Application filed June 19, 1916. Serial No. 104,499.

To all whom it may concern:

Be it known that I, AnoLPH ZEISEL, a subject of the Emperor of Austria, and a resident of Bel Air, in the county of Harford and State of Maryland, have invented a certain new and useful Improvement in Lamp- Changing Devices, of which the following is a specification.

My invention relates to improvements 1n lamp changing devices, more especially those devices which are used to change incandescent light globes, and it consists in the combinations, constructions, and arrangements herein described and claimed.

An object of my invention is to provide a device which will firmly grasp the socket and which may be instantly released from the latter.

A further object of my invention is to provide a means for positively locking the gripping device in position, thereby obviating the danger of dropping the globe and socket through the retraction of the gripping arm.

A further object of my invention is to provide a device in which the holder is provided with a lamp which shines directly on the globe and socket to be removed, thereby facilitating the use of the apparatus.

Other objects and advantages will appearin the following specification, and the novel features of the invention will be particularly pointed out in the appended claim.

My invention is illustrated in the accompanying drawings, forming part of this application, and in which:

Figure 1 is a side view of the device;

Fig. 2 is an enlarged view partly in section, and

Fig. 3 is a side elevation showing the slot for bringing the battery into its operative position.

In carrying out my invention, I make use of a pole or rod 1 at the upper end of which is a sleeve 2 having a flange 3 disposed thereon. At the upper end of the sleeve is a collar 41 which bears ears 5, to which are pivoted the gripping arms 6. The extremities of these gripping arms are provided with curved portions 6 arranged to fit the rim 7 of the base of the socket 7". The arms 6 are pivoted at 9 to the ears 5, and each arm is provided with an extension 6 which is angularly disposed with respect to that portion which is pivoted at 9. Each of which follows the contour of the exten-- sion 6".

Surrounding the sleeve 2 is a slidable collar 11 which is provided with outwardly extending ears l2. Pins 13 extend through the ears 12, and through the slot 10. A spiral spring 14 surrounds the sleeve 2, and bears at one end on the collar 3 and at the other end on the slidable collar 11.

The sleeve 2 bears a cam slot 15,through which a pin 16 extends. This pin 16 enters a cylindrical member 17, on the interior of the sleeve 2, said cylindrical member 17 being provided with a contact member 17*.

Above the contact member 17 is a battery or cell 18 having a terminal 18 ar ranged to engage the contact 17-, and a terminal l8 at its opposite end arranged to engage a terminal 19 at the base 20 of an electric light 21. This light 21 is backed by a reflector 22. It is covered by a lens 23 which is held. in place by a split ring 24:. A spring 25 is disposed between the battery 18 and an inwardly projecting annular flange 2 From the foregoing description of the various parts of the device, the operation thereof may be readily understood.

Consider Fig. 1: In this figure I have shown the slidable collar 11 as being provided with a lug 11 to which a cord 27 is attached, this cord having a loop or handle 28 at its bottom. On pulling downwardly on this cord, the collar 11 will be moved downwardly, and will cause the arm 6 to take the dotted line position shown in Fig. 2. This will release the gripping member from the socket T The rod 1 may then be brought into position to remove another lamp 8 and socket 7- or globe, and this is facilitated at night by the electric light 21. On releasing the cord 27, this spring 1 1 will restore the collar 11 to its former position, thereby bringing the arms 6 into operative position with the socket.

It will be noted that when the arms 6 are in their gripping position, they are positively locked against movement, because of the fact that the slots 10 are parallel. Any lateral pressure tending to open these arms therefore is ineffective. When, however,the cord 27 is pulled and the collar 11 moved downwardly, then the arms are released. The release of the arms may take place instantly, and conversely when the cord 27 is released, the arms are instantly brought into their locking position.

In assembling the battery and lamp the cell 18 is first placed inside the sleeve 2, after which the spring 25, the lamp reflec tor, and the lens are assembled in the order named. Now, by moving the pin 16 in the cam groove 17, the battery may be brought into such position that its terminals will make efl ectivecontacts so that the current will flow through the lamp to the reflector,

thence to the casing, and around to the opposite terminal of the battery. By reversing the movement of the pin 16, the contact 17 will be withdrawn from the contact 18, and the spring will thereupon cause the contact 18 to leave the contact 19. The button or pin 16 constitutes, together with the slot 15, a means of turning on light or turning it off, which as stated above, greatly facilitates the use of the apparatus.

I claim r The combination with a rod, of a pair of fulcrum members carried thereby, a gripping arm pivotally mounted on each fulcrum member, each of said gripping arms being provided with a slot, a portion of the slot being parallel with the portion of the corresponding slot for locking the gripping arms in their gripping position, and the remaining portion of the slot being angularly disposed, a slidable collar carried by the rod, a pin carried on each side of said slidable collar and arranged to enter one of the 1 slots of the gripping arm, means for mov- 1ng the collar with respect to the rod, and a spring for normally retalning the collar 111 an upper position.

ADOLPH ZEISEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

